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Open-weight model · Text generation

Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE

by FL densohax/Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE

Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE is an open-weight model for text generation from FL, released under other. It has 262,144-token context. Its published files total 59.9 GB.

Run Qwen 3.8 Flash Next heretic-2 locally on two RTX 3090 24 GB GPUs and 128 GB RAM. Start with the GitHub quickstart and pinned runtime; the weights require its custom vLLM overlay.

Parameters—
Context262,144
Weights59.9 GB
Licenseother
AccessOpen weights
Monthly Downloads—

Model Card

Run Qwen 3.8 Flash Next heretic-2 locally on two RTX 3090 24 GB GPUs and 128 GB RAM. Start with the GitHub quickstart and pinned runtime; the weights require its custom vLLM overlay. This checkpoint is the heretic-2 reassembly of the (AutoRound W4A16) instead of Intel's stock AutoRound target. 1,860 tok/s prefill · 89.1 tok/s decode · 2× RTX 3090 + 128 GB RAM decode after 131,072 input tokens. Each generates 2,048 tokens. The latest experimental runtime reaches the first token in 139.8 seconds with 260,096 input tokens, then generates 2,048 tokens at 86.2 tok/s. That fills the native 262,144-token window. The full request takes 163.6 seconds. The wait fell from 214.5 to 139.8 seconds…

Excerpt from the card by FL, licensed other.

Configuration

Architecture
Qwen4ExpForConditionalGeneration
Context length (tokens)
262,144
Layers
48
Hidden size
2,560
Attention heads
24
Key/value heads
2
Head dimension
256
Vocabulary size
248,320
Experts
512
Experts active per token
10
Model type
qwen4_exp
Quantization
auto-round

Identity and Version

Repository
densohax/Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE
Publisher
FL
Task
Text generation
Modality
Text
Library
Not stated by the source
Parameters
Not stated by the source
Languages
rtx-3090, cpu-offload
Revision
a6f6506f230e9e0d11edd3be617cb890db60df0a
First published
2026-09-22
Last updated
2026-09-22

Files and Weights

47 files, 59.9 GB in total. The weights are 41 files totalling 59.9 GB in safetensors.

Weights41 files · 59.9 GB
Configuration3 files · 286.4 KB
Documentation1 file · 9.7 KB
Other1 file · 9.0 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model-00001-of-00049.safetensorsWeights1.5 GB 23767a37bda5
model-00002-of-00049.safetensorsWeights1.5 GB bb05dfef111f
model-00003-of-00049.safetensorsWeights1.5 GB ac966fa89676
model-00004-of-00049.safetensorsWeights1.4 GB 37f8db98c5a9
model-00005-of-00049.safetensorsWeights1.5 GB 3f72552167c3
model-00006-of-00049.safetensorsWeights1.5 GB ff9e296fa4d8
model-00007-of-00049.safetensorsWeights1.5 GB f0906a34f370
model-00008-of-00049.safetensorsWeights1.4 GB 15b1861c7ab2
model-00009-of-00049.safetensorsWeights1.5 GB e08982aa1478
model-00010-of-00049.safetensorsWeights1.5 GB ec6bdc9d2411
model-00011-of-00049.safetensorsWeights1.5 GB f8b03563d878
model-00012-of-00049.safetensorsWeights1.4 GB 601dd9b32994
model-00013-of-00049.safetensorsWeights1.5 GB ec176d1f5ee0
model-00014-of-00049.safetensorsWeights1.5 GB ff51b5741071
model-00015-of-00049.safetensorsWeights1.5 GB 536ea9dce885
model-00016-of-00049.safetensorsWeights1.4 GB 9277160e2d96
model-00017-of-00049.safetensorsWeights1.5 GB 8dcdb5946136
model-00018-of-00049.safetensorsWeights1.5 GB 877305faaae2
model-00019-of-00049.safetensorsWeights1.5 GB 1d049904d1e2
model-00020-of-00049.safetensorsWeights1.4 GB 317a08c39381
model-00021-of-00049.safetensorsWeights1.5 GB e12093cc9dd8
model-00022-of-00049.safetensorsWeights1.5 GB 3135909d6842
model-00023-of-00049.safetensorsWeights1.5 GB b70c0fef66dc
model-00024-of-00049.safetensorsWeights1.4 GB 36bae3f7e9f6
model-00025-of-00049.safetensorsWeights1.5 GB 451f59539452
model-00026-of-00049.safetensorsWeights1.5 GB 166006ad24e3
model-00027-of-00049.safetensorsWeights1.5 GB 4fa222e44ca2
model-00028-of-00049.safetensorsWeights1.4 GB fa988946365d
model-00029-of-00049.safetensorsWeights1.5 GB e5761f930fde
model-00030-of-00049.safetensorsWeights1.5 GB 42296b5ec3c9
model-00031-of-00049.safetensorsWeights1.5 GB e0f0df0f272a
model-00032-of-00049.safetensorsWeights1.4 GB 83b82a613af2
model-00033-of-00049.safetensorsWeights1.5 GB e5323517b6e5
model-00034-of-00049.safetensorsWeights1.5 GB f7138b100244
model-00035-of-00049.safetensorsWeights1.5 GB fa4c009e3d8e
model-00036-of-00049.safetensorsWeights1.4 GB c7d5c1552972
model-00037-of-00049.safetensorsWeights1.5 GB 597be1639e84
model-00038-of-00049.safetensorsWeights1.5 GB af78d57517b7
model-00039-of-00049.safetensorsWeights1.5 GB 547efba95968
model-00040-of-00049.safetensorsWeights1.4 GB 615dbc2dcfb1
model-00041-of-00049.safetensorsWeights1.5 GB 4d4e06e26584
config.jsonConfiguration284.6 KB —
generation_config.jsonConfiguration226 B —
hybrid_sources.jsonConfiguration1.6 KB —
README.mdDocumentation9.7 KB —
chat_template.jinjaOther9.0 KB —
.gitattributesRepository1.5 KB —

License and Download

License
other
Access
Open weights, no gate
Download size
59.9 GB
Download from FL

Released by FL through its official repository on Hugging Face.

Built From

Memory Requirements

PrecisionWeights in memory
As published59.9 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE

What license is Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE released under?

other, as its publisher declares it. Read the license text before commercial use.

What is Qwen3.8-Flash-Next-heretic2-W4A16-FP8PLE's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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